The Spanish language television news network Univision unleashed a bombshell investigative report on Operation Fast and Furious Sunday evening, finding that in January 2010 drug cartel hit men slaughtered students with weapons the United States government allowed to flow to them across the Mexican border.

“On January 30, 2010, a commando of at least 20 hit men parked themselves outside a birthday party of high school and college students in Villas de Salvarcar, Ciudad Juarez,” according to a version of the Univision report in English, on the ABC News website.

“Near midnight, the assassins, later identified as hired guns for the Mexican cartel La Linea, broke into a one-story house and opened fire on a gathering of nearly 60 teenagers. Outside, lookouts gunned down a screaming neighbor and several students who had managed to escape. Fourteen young men and women were killed, and 12 more were wounded before the hit men finally fled.”

Citing a Mexican Army document it obtained and published, Univision reported that “[t]hree of the high caliber weapons fired that night in Villas de Salvarcar were linked to a gun tracing operation run by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF).”